Sprocket chain or link belt



. July 5, 1927.

- 1,634,647 s. J. saws I SPROCKET CHAIN 0R LINK-BELT 1| oriiuhal Filed April 25. 1921 1 Samuel J Bans,

5515 (M W; MM

Patented July 5, 1927.

UNITED STATES PATENT OFFICE.

SAMUEL J. BENS, or new YORK, II. Y., ASSIGNOB'TO CHAIN sAw CORPORATION, or

WILMINGTON, DELAWARE, A CORPORATION or DELAWARE.

srnocxn'r CHAINfOR LINK BELT.

Substitute for application Serial No. 463,835, filed April 23, 1921. This application fi1ed.November 16,

' 1926. Serial No. 148,764.

My present invention relates to improvements in sprocket chains or link belts and aims to provide a construction which Wlll be much more durable or long lived than chains heretofore in use. I

The invention comprises in its broadest aspect a chain having its links provided with wear plates at the points where they contact with the teeth of the sprocket, which is the point of greatest wear. The invention further includes the provision of removable wear plates whereby such plates, when worn, can be replaced without the necessity of discardi'ng the whole chain.

The invention further comprises the novel construction and arrangement and combinationof parts hereinafter described and particularly defined by the appended claims.

The preferred embodiment of my Invention is illustrated in the accompanying drawing in which 7 Figure 1 is a side elevation of a portion I of a chain (one whole link and a portion of an adjoining link).

Figure 2 is an edge or top plan v1ew of the same, partly in section.

Figure 3 is a side elevation showlng the chain in position upon a sprocket wheel.

Figures 4, 4 4 and 4 are detail views of one of thewear pieces. A

Figure 5 is a detailed view in slde elevation of one end of one of the links, showing a modification.

Figure 6 is a plan View of the same, and

Figure 7 is an end view.

In this drawing I have, for convenience of illustration shown only a chain designed to be driven continuously in one direction but it will be understood that my invention is not limited to any particular form or type of chain, that shown being typical of any desired construction.

The links are indicated in the drawings by the numerals 1, 1, and in the form shown these are each formed of two strips of metal, as for instance sheet metal abutting for the greater part of their length and spread apart or separated at one end, as indicated at l" to provide a forked portion, between the forks of which are pivotally connected the ends of the next link by any approved or desired form of pivot. The form of chain shown is adapted for use in connection with a sprocket having two sets of spaced teeth from wear, and to enable them to be readily.

renewed when worn I prefer to construct them in the following manner. At their ends the portions 1 are widened out or struck up as indicated at 1 where. the thickness of the metal of which the link is made,

is notsuflicient for this purpose, as is likely to be the case where the links are stamped up from sheet metal, such form being desirable as a relatively thin body gives ample strength while producing an extremely light chain. In such case the portions l may conveniently be formed by stamping or swaging into the form of are shaped outwardly turned flanges which are curved on the arc of a circle concentric with the axis of the pivot connecting the adjoining links. Upon the face of each of these flanges I apply a wear plate designed to receive the thrust of the tooth, such wear plate being indicated at 3. These wear plates are made of arc shape to correspond to the curved faces of the flanges which they overlie, and may be secured thereto in any suitable manner. An important feature of my invention is the making of these wear plates removable so that they can readily be removed when worn, and to accomplish this in a simple and economical manner I construct the wear plates with end tongues which project beyond the terminal edges of the arc-shaped flanges and are designed to be bent around said edges as indicated at 3*. To hold the wear plates against lateral displacement in an outward direction the flanges 1 may be provided with outwardly turned ribs 1) which abut against the outer edges of the wear plates. The tongues 3 are provided with cut away or rebated portions a which enables the inner edges of the wear plates to lie flush with the inner faces of the forks of the chain links.

It will be noticed that inward movement of the wear plates is prevented by the engagement of the inner edges of the tongues with the outer faces of the link forks.

By a construction such as above described the wear plates may be made 'of a much harder and wear-resisting material than the chain links which enables the latter to be constructed trein naterial which lendsitselt readily to being easily Werked proper shape, as for example by stamping from sheet metal. The making at the Wear. plat-es removable enables them to be removed and replaced when worn-,- thus avoiding the necessity of discarding the Whole chain.

It Will be understood that the Wear plates may be made of'diinensions' corresponding to the size anducur vature of the sprocket Wheels upon Whichth-echain is to beused.

In order to economically apply and remove the wear plates pliers may be used having suitable jaws for engagingand'bending the projections.

If" desired, two sets of Wear plates may be applied to each "link so as to make the chain universal or capable of being passed around one or more deflecting sproc kets such double set of Wear platesbeing shown in Figs. 5 and?) As will be evident to those skilled in the art, my invention permits 0tvariousimotlnications WltllG-llt departing from the spirit thereof or the scope ofthe appended claims.

This application is based upon my appliof links h h ving a fOi'k'Etl' 6'11 cation No. 463,835, filedrapril23. 1921 allowed December 18,' 1922, 11ml now held among the abandoned files.

Havingthus deF-cribed my invention what I claim is: v

1. A link belt or chain having links provided:withjlaterally extended flanges, and Wear plates secured upon the outer faces of said flanges. I a

'2. A link belt or chain having links provided With arc-shaped laterally extending flanges, and are shaped-Wear ala 't ha vi-ng end projectionsextendingaround the ends of said are sha-p-ec'l portions.

3. A: link'belt or cha n hav ng; lit

vided with arc-shaped lat t ll flanges provided with retainin- 'ar c shaped Wear plates fittin-gragainst said ribs and having theirends extending around the ends of said arc-shaped portions.

l; A link belt or chaincomprising-aseries h lesi ed to, receive the end ofthe-next:adj'onnn r the forked portions of saidflinks thavin Wear platessecure'd to: said flanges;

In testimony wl ie'reof, l aliii; 'my "signature,

g-lztt- --erally extending flanges, and illc is lliiipt'l 

